The Touga Ninja Corps, also known as the Ninja Association, is a secret organization of Ninjas that is based within Amatsu. A village chief had gone missing and a search party was sent to find him. In the process, internal conflicts have broken out within the corps and the group faces instability. Despite that, they are still open to new recruits who manage to find their way to the corps' secret hideout.

Many members of the corps will typically transfer to Kagerou and Oboro's clan.